Review Request 115923: Render SvgItem natively rather than going through QQuickPaintedItem

[Commit Hook]

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This review has been submitted with commit 66bac622b4e2a268098d59b3ab708b18634a362a by David Edmundson to branch master.

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On Feb. 21, 2014, 3:32 p.m., David Edmundson wrote:
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> https://git.reviewboard.kde.org/r/115923/
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> (Updated Feb. 21, 2014, 3:32 p.m.)
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> Review request for Plasma.
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> Repository: plasma-framework
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> Description
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> The rationale behind this patch is on the mailing list in the thread "Minutes Monday" 
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> This doesn't boost performance or save memory much, but it paves the way for texture sharing, faster resizing, and plenty of other things.
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> Based on Frederick's comment I have reverted my changes to use QImage everywhere, otherwise we lose out on the local QPixmap cache in KImageCache.
> Changes to plasmacore are minimal.
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> I'm currently porting FrameSVG which is where we should see more gains, but I thought I should get this reviewed/merged in parallel.
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> I have only seen one regression which is in the analog clock.
> Some odd code in the analog clock (by me apparently!) means the width is dependent on the current width, which due to some changes in this patch ends up in a constant spiral getting to infinitely sized and explode.  
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> Changelog (in reverse order):
> Remove manual isDirty tracking in SvgItem
> Always resize the node geometry on resizes
> Update to paint to fill the size of the object, not the size of texture
> Fix leaking texture
> Add convenient QImage image() getter in SVG
> Avoid repainting if node is not changed
> Render SvgItem natively rather than going through QQuickPaintedItem
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> Diffs
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>   src/declarativeimports/core/svgitem.h c8be7cc 
>   src/declarativeimports/core/svgitem.cpp e90751a 
>   src/plasma/svg.h 01d98f8 
>   src/plasma/svg.cpp 9ec2aa5 
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> Diff: https://git.reviewboard.kde.org/r/115923/diff/
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> Testing
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> Thanks,
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> David Edmundson
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